The Effect of Chopsticks on Health
Floor Location : J 185 H
To begin with, research has shown that disposable chopsticks have lots of chemicals and toxins in them. When the bamboo chopsticks are getting made there’s a lot of chemical substances such as sulphur, hydrogen peroxide, sodium sulfite and mold inhibitor added to the chopsticks when making them and the Chinese government doesn’t seem to care. Furthermore, eighty percent of all chopsticks imported from china have all of these chemicals in them and it’s negatively affecting people's health because the sulphur dioxide that’s contained in the chopsticks can lead to respiratory functions, asthma and skin irritation. In order to test if this is true and if disposable chopsticks actually affect people's health, chopsticks will be added into the daphnia’s environment and if the daphnia have a difference in heart rate, then that means that there is a lot of chemicals in chopsticks and humans shouldn’t use them. My research question is “What is the effect of chemicals in chopsticks on health measured by the heart rate of daphnia in seconds?”. My hypothesis is if chopsticks are added into the environment of the daphnia then the chemicals in the chopsticks will cause a difference in heart rate of the daphnia. In order to test this, the first thing that I had to is order a culture of living daphnia online. After the daphnia arrived, I boiled 3.2 litres of distilled water and poured it into nine different glass jars. The first three jars had no chopsticks added because it was the control, the second three jars had one chopstick added into each jar and the last three jars had six chopsticks added into each jar. After twenty-four hours of the chopsticks being soaked in the water, I started testing the heart rate of the daphnia by using a pipette to transfer the daphnia onto a concavity slide and then I removed the remaining water before I added the water that I was testing it with depending on what condition and replicate it was. Next, the heart rate of the daphnia was checked and after all the conditions and replicates were tested, I noticed that when the heart rate of the daphnia was tested with 1 chopstick in 350 mL of water, the average was 205 beats per minute and each daphnia’s heart rate was significantly higher than each daphnias heart rate tested with no chopsticks in the distilled water with an average of 193 beats per minute. In addition, the water that had 6 chopsticks in it, made the daphnia heart rate go much higher than the daphnia in the other condition because the average was 221 beats per minute. Overall, the more chopsticks that are in the water, the more chemicals there are and that results into the daphnia having a higher heart rate. From looking at the results, I found out that humans shouldn’t use chopsticks anymore and that it’s bad for your health.